I went out briefly with a mainland Chinese girl in Japan, and had a pretty bad time of it. We were both Nihongo students at a language school. The girl acted so secetively it drove me crazy. She didn't want it to get around to the other Chinese that she was going out to me. I suspected her of being involved with someone else, which she denied. She said that Chinese people are terrible gossips, esp towards other Chinese. Given that we were both in a foreign country, I thought she was taking the secrecy overboard. Ultimately it broke us up.